| Identify the best choice that completes | Enter either physical or chemical as you |
| Diamonds are a very hard substance. | |
| The tree is 8 meters high. | |
| Sodium reacts very easily with other elements. | |
| Copper conducts electricity. | |
| Water is a liquid. | |
| The mass of the NaCl sample is 30 grams. | |
| Gold is nonflammable. | |
| Alka-Seltzer tablets react with water to produce gas. | |
| The color of the ball is red. | |
| Iron reacts with oxygen and forms rust. | |
| __________ properties describe matter. | |
| __________ properties of a substance can be observed. | |
| One can use their five senses to determine the __________ properties of a substance. | |
| __________ properties usually describe how a substance reacts. | |
| __________ properties are not as easy to observe. | |
| __________ properties can be used to identify substances. | |
| Oxygen is odorless and colorless. | |
| Copper turns green when exposed to the environment. | |
| The piece of metal is magnetic. | |
| The density of water is 1.0 g per ml. | |
| Diamonds are a very hard substance. | |
| The tree is 8 meters high. | |
| Sodium reacts very easily with other elements. | |
| Copper conducts electricity. | |
| Water is a liquid. | |
| The mass of the NaCl sample is 30 grams. | |
| Gold is nonflammable. | |
| Alka-Seltzer tablets react with water to produce gas. | |
| The color of the ball is red. | |
| Iron reacts with oxygen and forms rust. | |